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June 2, 1931. 1.,w. BALSER ET AL 1,807,722-

WEFT REPLENISHING DOUBLE SHUTTLE LOOM Filed Feb. 26, 1929 4 Sheets-Shee l bye/ra ors Leszr M .BQ/frr fire/1 27 i C/bn far/Lays June 2, 1931. L. w. BALSER ET AL 1,807,722

WEFT REPLENISHING DOUBLE SHUTTLE LOQH I 7 Filed Feb. 26, 1929 4 Sheets-Shee 2 asaeasa: 26 25' June 2, 1931. L. w. BALSER ET AL WEFT REPLENISHING DOUBLE SHUTTLE LOOM Filed Feb. 26, 1929 4 Sheets-Shee 3 June 2, 1931. 1.. w. BALSER ET AL 1,807,722.

WEFT REPLENISHING DOUBLE SHUTTLE LOOM Filed Feb. 26, 1929 I 4 Sheets-Shee 4 l IIIIII I/IMIIIII/Il/Il Patented June 2, 1931 UNITED STATES- PATENT OFFICE LESTER W. BALSER AND EVERETT E. CLARK, OF WORCESTER, MASSACHUSETTS, AS-

SIGNORS TO OROMPTON & KNOWLES LOOM WORKS, F WORCESTER, MASSACHUSETTS,

A CORPORATION OF MASSACHUSETTS VTEIET REPLENISHINGDOUBLE SHUTTLE LOOM Application filed February 26, 1929. Serial No. 342,794.

which the shuttle flights are of the samev length but are differently disposed longitudinally of the lay, so .that weft replenishment by direct downward movement may be provided for eachshuttle beyond the locus of movement of the'other shuttle.

An important feature of. our invention also. relates to the provisionof weft detect ing means for each shuttle in a double shuttleloom, said detecting means being cross connected, so that each detector controls weft carrier transfer from the magazine at the opposite side of the loom.

Our invention furtherrelatesto arrangements and combinations of parts which will be hereinafter described and more particu: larly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a front elevation of a loom em bodying our improvements;

Figs. 2, 3 and 4 are partial sectional side elevations thereof, taken along the lines 2-2, 33, 4.4= in Fig. 1, respectively;

Fig. 5 is a detail sectional rear elevation, taken along the line 55 in Fig. 2;.

Fig. 6 is an end elevation, partly in section, taken along the line 6-6 in Fig. 1;

Fig. 7 is a plan View, partly in section, and looking in the direction of the arrows 7 in Fig. 1; I

Fig. 8 is a View similar to Fig. 2, but showing the parts in a different position;

Fig. 9 is a detail plan view, looking in the direction of the arrow 9 in Fig. 8, and

Fig. 10 is a detail sectional elevation, taken along the line 1010 in Fig. 7.

Referring'to the drawings, we have shown portions of a double shuttle loom comprising a loom frame 20, a lay 21, a bottomor cam shaft 22, and weft replenishing magazines M and M mounted at opposite ends of a breast beam 24:, said magazines being of an ordinary rotary type.

Upper and lower shuttles S and S are mounted for superposed travel on the lay 21. The usual shuttle boxes 24: and 25 are provided for the upper shuttle S and similar boXes-26 and 27 are provided for the lower shuttle S.

As shown in Fig. 1, however, the upper box 24 is shifted to the left and the lower box 27 is shifted to the right, so that the box 24 is beyond the left hand limit of movement of the lower shuttle S, and the box 27 is beyond the right hand limit of move,-

inent of the upper shuttle S.

The usual picker sticks 30 and 31 are provided for each shuttle at each side of the loom and may be actuated in any convenient 'manner- In the drawings, we have shownthe inner sticks 30 as engaged by pick levers 32 (Fig. 6) having cam. blocks 33 engaged by rolls 84 on pick arms 35 secured to and rotatable with the bottom or camshaft 22. The inner sticks 30 are loosely connected with the outer sticks 31 by lug straps 86, which may be adjusted upward or downward on either stick to give the exact desired relative movement.

'The picking mechanism shown and described is illustrative only and any other suitable picking mechanism may be substituted. g

The left hand magazine M is positioned over the upper left hand shuttle box 24 and beyond the path of movement of the lower shuttle S. Similarly, the right hand magazine M is positioned above the lower right hand shuttle box 27 and beyond the path of movement of the upper shuttle S. It is thus possible to transfer a weft carrier by direct downward movement to the upper shuttle from the magazine M, or to the lower shuttle from the magazine M, withoutinterference or complication from the movements of the second shuttle.

Each magazine is provided with a transferrer a0 or 41 (Figs. 3 and f) and the transferrers and 4-1 are provided with the usual latches 42 and movable into position for engagement by hunters =14 or 45 on the lay 21.

Latch-positioning shafts and 51 (Figs. 1 and 10) are mounted in bearings 52 on the breast beam 24. The shaft 50 has an arm 54 (Fig. loosely mounted thereon but forced axially against a collar 55 (Fig. 7) by a spring 56. The collar is fast on the shaft 50 and is provided with a. lug or projection 57 extending into a V-shaped notch in the hub of the arm 56, forming a yielding 0r give-way connection for a. purpose to be described.

The arm 54 engages the latch 43 previously described and is effective to raise the latch into the path of the hunter 45 when weft exhaustion in the shuttle S is indicated.

An arm 60 (Fig. 7) is secured to the right hand end of the shaft 51 and extends beneath the latch 42 of the magazine lV". Upon weft exhaustion, movement of the arm 60 raises the latch 42 into position for engagement by the hunter 44.

As the latch 42 is moved forward, it slides freely over the end of the arm 60, so that no yielding connection is necessary between the arm 60 and. the shaft 51. The arm 54 (Fig. 3), however, engages the front side of the latch 43 and is directly in the path of the latch as it is moved forward by the hunter 45. It is for this reason that the yielding connection is provided between the arm 54 and the shaft 50. The angular movement is slight, however, and is not sulficient to displace the projection 57 from the V-shaped notch, so that the arm 54 is selfresetting.

Detecting mechanism o have provided mechanism for detecting substantial weft exhaustion in either of the shuttle S or S. For this purpose we have provided a detecting mechanism D (Fig. 7 at the right hand side of the loom for indicating the condition of the weft in the upper shuttle S, and a detecting mechanism D at the left hand side of the loom for indicating the condition of the weft in the lower shuttle S.

The mechanism D is connected to control weft carrier transfer from the magazine .4 to the shuttle S at the left hand side of the loom and the mechanism D similarly controls transfer from .the magazine M to the shuttle S at the right hand side of the loom.

The detector itself forms no specific part of our present invention and may he of a usual single-contact, side-slipping type, as shown in the drawings.

The detecting member 62 (Fig. 7) in the mechanism D engages the weft carrier V7 in the shuttle S and, upon substantial exhaustion of weft thereon, the member 62 slides to the left along the weft carrier W, causing similar movement of a slide bar 63 connected by a push rod or wire 64 to a plunger 65, slidable in a bearing 66 formed on a yoke member 67 which is pivoted in a bracket 68 secured to the breast beam 24.

The detecting member 72 of the mechanism D similarly controls a slide bar 73 connected by a push rod or wire 74 (Fig. 9) to a plunger 7 5 mounted in. a bearing 76 also formed on the pivoted yoke member 67 previously described.

The yoke member 67 is connected by a link 77 (Fig. 8) to a cam lever 78 (Fig. 2) provided with a cam roll 79 positioned in the groove or track 80 of a side cam 81, mounted on the bottom or cam shaft 22. The cam 81 is so designed that it has two concentric portions 82 and two actuating portions 83 and 84. As the cam roll 79 enters the actuating portion 83, the lever 78 is raised and the yoke member 67 is rocked from mid-position to the forward position shown in Fig. 2. The member 67 is immediately returned to 1nid-position, where said member remains at rest while the roll 7 9 is in the concentric portion 82.

The roll 79 then enters the actuating portion 84 which rocks the yoke member 67 to the rearward position indicated in Fig. 8, after which movement the yoke member is again returned to mid-position.

A pair of rock arms 85 and 86 (Fig. 5) are loosely mounted on the stud 87 by which the yoke member 67 is pivoted in the bracket 68. The upper ends of the arms 85 and 86 project into the path of movement of the plungers and and are engaged thereby when either one of these plungers is projected through its bearing 66 or 76.

At its lower end, the rock arm is cross connected by a link 90 (Fig. 8) to an arm 9.1 fixed on the indicating shaft 50. The arm 86 is similarly cross connected by a link 92 to an arm 93 fixed on the indicating shaft 51.

The ends of the plungers 65 and 75 are preferably cut away or beveled inward from their outer ends, as indicated in Fig. 9, and the engaging faces of the rock arms 85 and 86 are similarly beveled. Springs )5 (Fig. 2) act to hold the rock arms 85 and 86 yieldingly in upright or mid-position.

O pemtioa Having described the details of construction of our improved mechanism, the method of operation thereof is as follows As the lay moves forward, the shuttles S and S will be boxed on the same side of the loom, at one end or the other of the lay 21. Assuming that they are boxed at the right hand end of the lay. the detector 62 (Fig. 7) of the mechanism D will engage the weft carrier in the shuttle S and, upon substantial exhaustion of Weft thereon will slide to the left, moving the slide bar 63 and push wire 64 and thus projecting the plunger 65 into'the path of the rock arm 85. The parts are so timed that this movement of the plunger 65 will occur when the plunger is at the front of the beveled upper end of the arm 85 (or at the left as viewed in Figs. 8 and 9).

The yoke 67 will then be rocked to move the plunger to the position shown in Fig. 9, moving the arm 85 to the right in Fig. 9 and acting through the link 90 and arm 91 to rock the shaft and cause the arm 54 (Fig. to raise the latch 43 to engaging position.

The beveled faces of the plunger and rock arm 85 cause the indication to be retained after the lay has moved rearward and until the shuttle S reaches the left hand side of the loom. On the next forward movement of the lay, the hunter 45 engages the latch 43 and causes the transferrer 41 to transfer a fresh weft carrier to the shuttle S.

Vhen both shuttles are at the left hand side of the loom, the bobbin WV in the shuttle S, is similarly engaged by the de tecting member 72 and upon substantial weft exhaustion the latch 42 (Fig. 4) is moved into position for engagement by the bunter 44.

Wehave thus provided very simple mechanism by which either the upper or lower shuttle in a double shuttle loom may be re plenished at any time and in which the replenishment may be made by direct downward movement of the weft carrier, without in any way interfering with the operation of the second shuttle.

Having thus described our invention and the advantages thereof, we do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what we claim is:

1. A double shuttle loom having, in combination, a pair of shuttles, a magazine for each shuttle, means to transfer weft carriers from said'magazines to said shuttles by direct downward movement, and a pair of shuttle boxes for each shuttle located so that the paths of travel of the two shuttles are substantially equal in length but are differently disposed transversely of the loom by an amount not less than the length of a shuttle, each magazine being positioned above a shuttle box which is beyond the path of travel of the other shuttle, wh ereb transfer to each shuttle may be effected free from interference by the other shuttle.

2. A double shuttle loom having, in combination, a pair of shuttles, a pair of shuttle boxes for each shuttle, the path of travel of each shuttle being extended beyond the path of travel of the other shuttle at one side of the loom by an amount not less than the length of a shuttle, a magazine for each shuttle positioned adjacent the extended part of said-shuttle travel, and means to by an amount not less than the length of a shuttle, a magazine mounted adjacent each outwardly displaced box, and means to transfer a weft carrier by direct downward movement from each magazine. to its associated shuttle in a shuttle box beyond the path of travel of the other shuttle.

4. In a" double shuttle loom, a pair of shuttles, weft carrier storage therefor, and means to transfer a weft carrier by direct downward movement from storage to each of said shuttles at a point in the normal path of travel in said shuttle positioned beyond the path of travel of the other shuttle by, an amount not less than'the length of a shuttle, whereby interference by either shuttle with transfer to the other shuttle is avoided.

5. In a double shuttle loom, a pair of shuttles having paths of travel relatively displaced transversely of the loom, a weft replenishing magazine for each shuttle positioned above the normal path of travel of said shuttle and beyond the limit of travel of the other shuttle by an amount not less than the length of a shuttle, and means to transfer a weft carrier from each of said magazines to its associated shuttle by adirect downward transfer movement, whereby interference by either shuttle with transfer to the other shuttle is avoided.

6. In a double. shuttle loom, a pair of shuttles and means to replenish a weft carrier in either shuttle by a direct downward transfer movement at a point in the normal path of travel of said shuttle positioned beyond the path of transfer of the other shuttle by an amount not less than the length of a shuttle, whereby interference by either shuttle with transfer to the other shuttle is avoided.

7 In a double shuttle loom, a pair of shuttles, a magazine at each side of the loom, one magazine being associated with each shuttle, a detector mechanlsm at each slde of the loom, each operative with one only of said shuttles, the detector at either 1 side controlling the magazine at the opposite side, and means to retain an indication by either detector mechanism until the indicated shuttle has crossed the loom to a pesition to receive a weft carrier from the corresponding magazine at the opposite side of the loom.

8. I11 a loom, a pair of shuttles, a weft detector for each shuttle, a magazine for each shuttle, actuating devices therefor i11- cluding a latch for each magazine, connections to said latches and a single member efi'ective through said connections to move either or both of said latches to engaging 19 position, said member being rendered operative as to each latch upon indication of substantial weft exhaustion in the associated shuttle.

9. The combination in a loom as set forth in claim 8, in which one of said latches is actuated through a give-way connection which yields as said latch is moved forward.

In testimony whereof we have hereunto aflixed our signatures.

LESTER W. BALSER.

EVERETT E. CLARK. 

